Extra \endgroup in \AddToHook

[ysalmon]

Brief outline of the bug

The command \AddToHook causes an error in special circumstances.

Minimal example showing the bug

\RequirePackage{latexbug}
\documentclass{article}
\ExplSyntaxOn
\NewDocumentCommand{\test}{m}{
    \group_begin:
    \cs_set_eq:cN { ~ } \space
    \group_end:
}

\AddToHook{cmd/test/before}{\relax}
\ExplSyntaxOff

\begin{document}
nothing
\end{document}

Note the error goes away if the {m} spec is replaced with {}. Also note I have no idea about \cs_set_eq:cN { ~ } \space, this is minimised from a function in a package I did not write (Piton, function \__piton_piton_standard).

Log file (required) and possibly PDF file

texstudio_VuFlvC.log No PDF file is produced.